function Page(data , name , callback){
	conditions = data.conditions || null,
	limit = data.limit || 10,
	//默认发布时间排序
	sort = data.sort || {releaseTime : -1},
	page = data.page || 0;
	name.find(conditions , null , {skip : (limit * page), limit : limit , sort : sort} , function(err , article){
		if(err){
			callback(err);
		};
		callback(null , article);
	});
};
module.exports = Page;
